/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *          http://license.coscl.org.cn/MulanPSL2
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 */

#ifndef OMNISTREAM_CANCELCHECKPOINTMARKER_H
#define OMNISTREAM_CANCELCHECKPOINTMARKER_H

#pragma once

#include <cstdint>
#include <stdexcept>
#include <string>
#include <memory>
#include "runtime/event/RuntimeEvent.h" // Assume this base class exists

namespace omnistream {

    class CancelCheckpointMarker : public RuntimeEvent {
    public:
        explicit CancelCheckpointMarker(int64_t checkpointId)
            : checkpointId_(checkpointId) {}

        int64_t getCheckpointId() const
        {
            return checkpointId_;
        }

        std::string GetEventClassName() override
        {
            return "CancelCheckpointMarker";
        }

        // These methods mimic the unsupported serialization in Java
        void write(std::ostream& out)
        {
            throw std::runtime_error("write() should never be called on CancelCheckpointMarker");
        }

        void read(std::istream& in)
        {
            throw std::runtime_error("read() should never be called on CancelCheckpointMarker");
        }

        bool operator==(const CancelCheckpointMarker& other) const
        {
            return this->checkpointId_ == other.checkpointId_;
        }

        bool operator!=(const CancelCheckpointMarker& other) const
        {
            return !(*this == other);
        }

        std::string toString()
        {
            return "CancelCheckpointMarker " + std::to_string(checkpointId_);
        }

        std::size_t hashCode()
        {
            auto i = 32;
            return static_cast<std::size_t>(static_cast<uint64_t>(checkpointId_) ^ (static_cast<uint64_t>(checkpointId_) >> i));
        }

    private:
        int64_t checkpointId_;
    };
} // namespace omnistream

#endif // OMNISTREAM_CANCELCHECKPOINTMARKER_H
